• DocumentCode
    545159
  • Title

    A study of the signal-to-noise ratio using Time-of-Flight information on a positron emission tomograph

  • Author

    Trebossen, R. ; Bendriem, B. ; Mazoyer, B. ; Syrota, A.

  • Author_Institution
    Service Hospitalier Frédéric Joliot, Commissariat à l´´Energie Atomique, 91406, Orsay
  • Volume
    5
  • fYear
    1992
  • fDate
    Oct. 29 1992-Nov. 1 1992
  • Firstpage
    1827
  • Lastpage
    1828
  • Abstract
    We present a study of the signal-to-noise ratio (SNR), conducted on the Time-of-Flight (TOF) positron emission tomograph (PET) CEA-LETI TTV03. An element of the pixel covariance matrix has been calculated. It includes the reconstruction process as well as statistical fluctuations in emission and transmission scans. Using this expression, we found that the SNR of a 20 cm diameter uniform cylinder is independent of the number of coincidences in the transmission scan when the emission scan contains less than 6 × 106 coincidences. With a 750 ps TOF resolution and a 2 mm pixel size, one pixel is only correlated with its nearest neighbours.
  • Keywords
    Noise; Pixel; Positrons; Read only memory;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Engineering in Medicine and Biology Society, 1992 14th Annual International Conference of the IEEE
  • Conference_Location
    Paris, France
  • Print_ISBN
    0-7803-0785-2
  • Electronic_ISBN
    0-7803-0816-6
  • Type

    conf

  • DOI
    10.1109/IEMBS.1992.5762059
  • Filename
    5762059
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=545159